The tattoo is just weird for any reason other than identification, IMO.

About the ear piercing. When Millie poked a hole in here ear on the rose bush it bled, and bled, and bled. We had to put super glue on a piece of cotton and glue that to the hole then bandage her head and make her wear a cone. (This was done per the VET) He said that the only thing that bleeds more profusely on a dog than the ears, is the tongue. Now, Millie never acted like her ear hurt or was sore, but she bled a HUGE amount. I can't imagine putting my dog through all that. It's different than piercing an infant or child ears to me, in that humans generally don't bleed as much as dogs.

I imagine that one good scratch on the ear, and those earrings are going to be ripped out. Then there will just be more bleeding.